Scaffolld-support.



A. 'KLUMPP.

SCAFFOLD SUPFORT. APPLICATION FILED NOV. 26, 1913.

1`,141554 Patented June 1. 1915.

AUGUST KLUMPROF MUNICI-I, GERMANY.

SCAFFOLD-SUPPORT.

matese.

Application filed November 26,1913.

To aZZ whom it may concm:

Be it known that I, AUGUs'r KLUMPP, a subject of the German Emperor, and residing at Munich, Bavaria, German Empire, have invented certain new anduseful Improvements in. Scafold-Supports, of which the following is a specification.

The present invention has reference to a new and useful means for anchoringscaffolding in a wall or other part of a building, and relates more specifically to a two-part device for supporting scafi'olding for building purposes, the one part thereof to be permanently Secured in the wall, ceiling, or other building part, and the other part of the support, intended to carry the running boards, to be temporarily connected to the fixed part without the use of any tools or other auxiliary means; and the ,object of the invention is to greatly simplify and cheapen the erection of staging for plastering, painting, repairng, or the like purposes, by doing away with the unsightly, expensive and more or less dangerous ladder staging with its trafiic-interfering sidewalk obstruction.

In order to make the invention more readily understood, I willnow describe 'it with reference to the accompanying drawing, in which- Figure 1 shows a perspective View of the front end of the hollow dowel; Fig. 2 a similar view of the bracket bolt end; Fig. 3 a vertical, longitudinal section through the dowel, with the hooked-n end of the bolt in dotted lines; F ig. 4 a horizontal section,

i inFigs. 1-5, the hollow dowel a, which is preferably cast in one piece, is provided in its front face' with a T-shaped opening a and has two claws a one at each side of the reduced portion of the T-opening, which claws eXtend rearwardly into the dowel hollow, their upper faces lying in the same plane with the lower faces of the arms of the T. k

The bracket bolt b, otherwise of any suitable shape, is rectangularly cross-sectioned i V at its wall end, and is provided thereat with two laterally eXtending extensions or lugs b one on either side, of dimensons' to snugly Specification of Letters Patent.

Patented June 1, 1915. Serial No. 803345,

lock with the dowel claws. To secure the bolt in the dowel, its lugged end is inserted into the dowel through the wider portion of the T-opening, is then dropped, the lugs 6 passing 'in the rear of the claws a?, and is finally drawn forward again, the parts now v .i

interlockng as shown in Figs. 3 and 4, with the bolt completely filling the reduced por- .tion of the T-opening.

'The bolt may run out into the horizontal member of a triangular bracket, as for instance shown in Fig. 5, the lower arm or strut c thereof then resting against the wall, and relieving thereby the otherwise upwardly directed strain on the dowel claws, so that the bolt end in the dowel is then subjected only to a straight pulling Stress. Planking is then placed on the brackets in the ordinary manner, as shown in dotted lines.

In the modification shown in Fig. 6, the dowel e is provided with a rectangular opening f in its front face and with an inwardly eXtending fiange or lip g at the lower edge thereof, behind which takes the hook-shaped end i of the-bracket bolt h, which in this instance also must be of rectangular crosssection, to fit the dowel opening f.

It is obvious that the dowels may also be cylindrical or of any other desirable crosssection, and they may be set into the structure in horizontal, slanting or vertical position. The dowels are preferably cemented into the wall or other building part flush therewith and, if provided with a lid for the opening and painted the color of the surrounding material, they will not be noticeable during non-use.

It is readily seen that on a building provided with such dowels, a large or small v scaffolding, or several, can quickly be raised and struck again without the use of special tools, and without in any way encroaching on the floor space, and as the dowels are distributed all over the face of the building, small units of scaffolding may be hung-up independently of one another, in case repairs or the like are to be made at spaced apart places.

What I claim is 1. A scafold support, comprising a hollow dowel, adapted to be permanently secured to a building structure, having an opening in its front face, and retaining means, comprising claws eXtending inwardly from said opening substantially parallel 

